Stop collar 4-1/2" to 20" API 

Stop collar  Stop collar is used to hold centralizers or cement baskets on any position casing, which ensures the position of centralizers or cement basket to meet the design, the stop collars are available in two types hinges type,slip on type, the stop collars can be installed on casing to limit the axial movement of centralizers and cement baskets. Usage 1. Fastening screw stop ring when use, first set into the casing ,and then using a wrench to tighten the screws. 2. Fixed screw type when use ,first set into the casing,and then insert screws,Type in with a hammer. 3. Snap fit stop ring, direct stop ring button on the casing,use pin lock, then knocked into the screw. Hinged bolted stop collars An economical collar suitable for sub-critical annular tolerances,available in the size range 4-1/2" to 20"，it has a cross bolt design which makes it an efficient and user friendly device. Hinged spiral nail stop collars Available in the size r…